This. Moreover, if Nadal can have a strong finish in the remaining tournaments this season then as far as rankings are concerned, the ball will (excuse the pun) be in Nadal's court. Roger would have to rely on Rafa slipping up early in a few of the big tournaments as it's unrealistic to assume that he will be able to accumulate enough points just by winning his own matches.
Yes, Rafa does have a lot to defend, but he could realistically gain points in the early hard court season. In addition, it's difficult to see him not winning the French Open. What about the grass court tournaments? Well, he will probably be the favourite for Wimbledon too.
Yeah, if Rafa wins Roland Garros it's very difficult for him to lose early at Wimbledon because you know he's in great ball-striking form from the clay and you know he adapts very easily to grass. And yes he can also gain some points at Indian Wells as he's very good on that surface. His future is very well set-up to have a long reign at number one. And even if he gets tendonitis its not big deal, he had tendonitis twice this year and had one knee treated just before the clay season and it fixed it 100% and then the other knee fixed after Wimbledon. It's only a 3-4 day process of blood-spinning treatment. Whereas the 2009 treatment didn't work at all, and wasn't applied by the same doctor. That's no longer an issue